skins: SkinManager + hot-swap (F7), classic/nes a data/skins/

source/core/resources/resource.cpp

@@ -8,6 +8,8 @@
 #include "core/rendering/texture.h"
 #include "core/resources/asset.h"
 #include "core/resources/resource_helper.h"
+#include "core/resources/skin_manager.hpp"
+#include "game/options.hpp"
 #include "game/ui/menu.h"
 
 // Nota: Asset::get() e Input::get() se consultan en preloadAll y al construir
@@ -263,3 +265,41 @@ auto Resource::getMenu(const std::string &name) -> Menu * {
     }
     return it->second;
 }
+
+void Resource::reloadForSkin(const std::string &skin_id) {
+    if (SkinManager::get() == nullptr || !SkinManager::get()->exists(skin_id)) {
+        return;
+    }
+
+    SkinManager::get()->setCurrent(skin_id);
+    Asset::get()->onSkinChanged();
+
+    // Recarrega cada textura cachejada des del nou path mantenint pointer
+    // identity perquè els Sprites no s'invaliden.
+    for (auto &[bname, tex] : textures_) {
+        const std::string NEW_PATH = Asset::get()->get(bname);
+        if (!NEW_PATH.empty()) {
+            tex->reLoadFromPath(NEW_PATH);
+        }
+    }
+
+    // Re-parseja els fitxers .ani de la nova skin.
+    for (auto &[bname, lines] : animation_lines_) {
+        const std::string NEW_PATH = Asset::get()->get(bname);
+        if (NEW_PATH.empty()) { continue; }
+        auto bytes = ResourceHelper::loadFile(NEW_PATH);
+        if (bytes.empty()) { continue; }
+        std::string content(reinterpret_cast<const char *>(bytes.data()), bytes.size());
+        std::stringstream ss(content);
+        std::vector<std::string> new_lines;
+        std::string line;
+        while (std::getline(ss, line)) {
+            if (!line.empty() && line.back() == '\r') { line.pop_back(); }
+            new_lines.push_back(line);
+        }
+        lines = std::move(new_lines);
+    }
+
+    Options::settings.skin = skin_id;
+    Options::saveToFile();
+}